The best laid plans of mice and men…usually take longer than we think they will.
August 27, 2025
Most people I work with don’t know this about me, because I make sure it all stays in the background, but to be blunt, I’m kind of the perfect person to address a cognitive bias called the “planning fallacy, because I’m an expert in it. I should get sponsorships from the planning fallacy. I could be its brand partner.
If memory serves, I once wrote 10 pages of a college paper the morning it was due. I often pack the day of a trip (sometimes within half an hour or less of when I need to leave). When I was little, I’d procrastinate practicing the piano until about a week or two before a recital, when I’d have to learn, memorize, and hone half or more of a Chopin nocturne in an unnecessary warp-speed frenzy.
Although I’ve never missed a flight, my train record is not impeccable, and, on a not-insignificant portion of my trips, I’ve arrived at my seat…let’s call it glistening. It’s not unusual for me to be finishing the last few pages of my book club’s book in the last few minutes before the meeting. And yet, I’m often surprised to find myself in this situation.
I’ll admit: rushing does sometimes energize me, deadlines motivate me, and more often than not, I pull it off—but with so much more glistening than necessary. (Don’t worry, showers are taken in the aftermath of the glistening.)
These dances (if you can call my trotting awkwardly up the platform of Union Station while my small roll-y suitcase cries “uncle” behind me a dance) make for funny stories, but only because they didn’t involve messing up a big presentation or letting someone on my team down. In other words, they’re fine if the stakes are relatively low. If not, they can harm your business and career. Humans vary in the degree to which they fall prey to the planning fallacy, but it is a recognized and prominent psychological hurdle.
The planning fallacy observes that we often lowball our prediction of the length of time an activity will take, even—and here’s the kicker—if we’ve done something similar to it in the past. In other words, we should know better!
What does this look like in sales? It can be thinking a deal is near closing when, in reality, you miscalculated just how long it would sit in legal. Or failing to properly time a demo to account for questions a prospect may have throughout the presentation.
A lot of this may sound basic. Building in extra time is not rocket science. Having a plan and clarifying everyone’s role in it do not make for a good game-show premise. CRMs? Not always thrilling. And still, these are the types of things that Maestro has seen improve company outcomes innumerable times. (Well, not innumerable, because they’re probably in the CRM.) So, after you’ve planned, assume something will take longer than you think it will. In short, do not underestimate your ability to underestimate.
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